C: Difference between revisions

Revision as of 17:59, 3 May 2021

Actually, there never was a Type C, but that name is sometimes used as shorthand for the official "Type 53C" and "Type 53/54C" nomenclatures.

The Tektronix Type 53C is a dual-trace plug-in for 500-series scopes. It was introduced along with the 531 and 535 mainframes in 1954. It is very possibly the first dual-trace scope or plugin ever.

Specifications

In the 53x scopes (Tek never documented its performance in the 540's), its bandwidth is 8.5 MHz, and like most letter-series plug-ins, its maximum vertical sensitivity is 50 mV/div. Unlike the Type A and Type B, the Type C had the ability to invert the signal before display.

Type 53C was replaced by Type 53/54C in 1956 when the 541 and 545 were introduced. The Type 53/54C's bandwidth is 24 MHz in those scopes. In 1959 it was replaced by Type CA.

Internals

At 15 tubes, the Type 53/54C and Type CA have the highest tube count of any letter-series plug-in. Each channel consists of a 6AK5 cathode-follower driving a 12AU6 differential pair which drives a 6AU6 differential pair. The two channels converge on a 12AT7 cross-coupled cathode-follower. Four more tubes, a 6AL5 and three 12AT7's, comprise a logic circuit which determines which channel drives the output at any given moment. The options are A, B, CHOPPED, and ALT.

Links

Pictures

53C-Plugin´s Front
53C-Plugin´s chassis
53C-Plugin´s chassis side
53/54C-Plugin´s front
53/54C-Plugin´s chassis
53/54C-Plugin´s chassis bottom
Schematic diagram
53/54C
53/54C
53/54C
53/54C
53/54C
53/54C
53/54C
53/54C

@@ Line 1: / Line 1: @@
-* http://w140.com/tek_fcp/tek_type_c_factory_cal_proc.pdf
+{{Plugin Sidebar 2 |
+title=Tektronix Type (53)C |
+summary=Dual-trace 8.5 (24) MHz amplifier |
+image=53-54c-crop.jpg |
+caption=Tektronix Type C (later version) |
+series=[[500-series scopes]] |
+introduced=1954 |
+discontinued=1959 |
+manuals=
+<!-- * [http://w140.com/tek_fcp/tek_type_c_factory_cal_proc.pdf Factory calibration procedure] -->
+* [http://w140.com/tek-53_54c.pdf Tektronix Type 53/54C Manual (PDF, needs OCR)]
+* [[Media:tek_type_c_fcp.pdf| Tektronix Type C Factory Calibration Procedure (PDF, OCR)]]
+* [[Media:Tek 53c cal procedure.pdf|Tektronix Type C Calibration Procedure (PDF, OCR)]]
+}}
+:''Actually, there never was a Type C, but that name is sometimes used as shorthand for the official "Type 53C" and "Type 53/54C" nomenclatures.''
+The '''Tektronix Type 53C''' is a dual-trace plug-in for [[500-series scopes]].
+It was [[introduced in 1954|introduced]] along with the [[531]] and [[535]] mainframes in 1954.
+It is very possibly the first dual-trace scope or plugin ever.
+==Specifications==
+In the 53x scopes (Tek never documented its performance in the 540's),
+its bandwidth is 8.5 MHz, and like most letter-series plug-ins,
+its maximum vertical sensitivity is 50 mV/div.  Unlike the Type [[A]]
+and Type [[B]], the Type C had the ability to invert the signal
+before display.
+Type 53C was replaced by Type 53/54C in [[introduced in 1956|1956]] when
+the [[541]] and [[545]] were introduced.  The Type 53/54C's
+bandwidth is 24 MHz in those scopes.  In [[introduced in 1959|1959]] it
+was replaced by [[CA|Type CA]].
+==Internals==
+At 15 tubes, the Type 53/54C and Type CA have the highest
+tube count of any letter-series plug-in.  Each channel consists
+of a [[6AK5]] cathode-follower driving a [[12AU6]] differential pair
+which drives a [[6AU6]] differential pair.  The two channels
+converge on a [[12AT7]] cross-coupled cathode-follower.  Four
+more tubes, a [[6AL5]] and three 12AT7's, comprise a logic circuit
+which determines which channel drives the output at any
+given moment.  The options are A, B, CHOPPED, and ALT.
+==Links==
+* [http://www.radiomuseum.org/r/tektronix_dual_trace_plug_in_pre_a.html 53C @ radiomuseum.org]
+* [http://www.vintagetek.org/wp-content/uploads/2011/10/Tek-series-500-development.pdf How the Tek 500 series came together]
+==Pictures==
+<gallery>
+C_early_1.JPG|53C-Plugin´s Front
+C_early_2.JPG|53C-Plugin´s chassis
+C_early_3.JPG|53C-Plugin´s chassis side
+C later 1.JPG|53/54C-Plugin´s front
+IMG 0949.JPG|53/54C-Plugin´s chassis
+C later 3.JPG|53/54C-Plugin´s chassis bottom
+Tek c schem.png | Schematic diagram
+Tek 53-54c 1.jpg|53/54C
+Tek 53-54c 2.jpg|53/54C
+Tek 53-54c 3.jpg|53/54C
+Tek 53-54c 4.jpg|53/54C
+Tek 53-54c 5.jpg|53/54C
+Tek 53-54c 6.jpg|53/54C
+Tek 53-54c right.png|53/54C
+Tek 53-54c left.jpg|53/54C
+</gallery>
+[[Category:500 series plugins]]